Nobody was even thinking of Iowa as a swing state, but the final pre-election Iowa Poll released on Saturday has the state swinging alright.

None is so eagerly awaited as the final Des Moines Register/Mediacom poll of Iowa, produced by Selzer & Co, a polling firm. On “Election Twitter”—the colloquial name for a community of political-data junkies on X—this particular poll has taken on a legendary status.